5. For the CD-BTB100, when connected to the AVH-P6800DVD or the AVH-P7800DVD, you would select Echo Cancel from the Function menu.

These steps will help reduce the echo effect to a certain level. It may not be possible to remove the echo effect with some phones. If the problem continues, please try multiple phones. For additional assistance, please contact our Product Support at 1-800-421-1404

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